In maritime law. A sea- letter ; a written document required to he carried by merchant vessels, containing an account of the cargo, with other particulars, for the facility of tbe customs officers. See New York & Cuba S. S. Co. v. U. S. (D. C.) 125 Fed. 320. In evidence. That which is clear and requires no proof; that which is notorious. Manifesta probatione non indigent. 7 Coke. 40. Things manifest do not require proof.